8470253021 has 4 divisors (see below), whose sum is σ = 8471552544. Its totient is φ = 8468953500.

The previous prime is 8470252963. The next prime is 8470253059. The reversal of 8470253021 is 1203520748.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8470253021 - 2¹⁰ = 8470251997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8470253081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639935 + ... + 653036.

It is an arithmetic number, because the mean of its divisors is an integer number (2117888136).

Almost surely, 2^8470253021 is an apocalyptic number.

It is an amenable number.

8470253021 is a deficient number, since it is larger than the sum of its proper divisors (1299523).

8470253021 is a wasteful number, since it uses less digits than its factorization.

8470253021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299522.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 8470253021 is about 92033.9775354733. The cubic root of 8470253021 is about 2038.4440446194. Note that the first 3 decimals are identical.

Adding to 8470253021 its reverse (1203520748), we get a palindrome (9673773769).

The spelling of 8470253021 in words is "eight billion, four hundred seventy million, two hundred fifty-three thousand, twenty-one".